基于Moldflow的玻纤增强聚醚醚酮支撑架模流分析
|
摘要
采用Moldflow分析软件对某航天器用玻纤增强聚醚醚酮支撑架进行了模流分析,基于分析结果提出了成型的注塑工艺参数,并且最终成型了支撑架制品。研究表明,壁厚不均匀和较大的收缩内应力是导致制品出现显著体积收缩和翘曲变形的内因,需适当调整壁厚结构、优化保压过程。采用注射温度380℃、模具温度170℃、注射压力97 MPa、注射速率55 cm3/s、保压压力90 MPa、保压时间15 s的注塑工艺参数成型的支撑架制品,成功应用于某航天器燃料贮箱中并通过了飞行考核验证,获得了良好的应用效果。
The Moldflow analysis software was used to analyze the model flow of a glass fiber reinforced PEEK supporting bracket for a spacecraft. Based on the analysis results,the injection molding parameters were put forward,and the supporting bracket was formed finally. The research showed that the inhomogeneous wall thickness and the larger inner stress were the internal factors that lead to the significant volume contraction and warpage,and the wall thickness structure should be adjusted and the pressure retaining process also should be optimized. With the injection temperature 380 ℃,the mold temperature 170 ℃,the injection pressure 97 MPa,the injection rate 55 cm3/s,the injection holding pressure 90 MPa and the pressure holding time 15 s,the supporting bracket products were successfully applied to a spacecraft fuel tank and passed the flight test verification,and the good application results had been obtained.
The Moldflow analysis software was used to analyze the model flow of a glass fiber reinforced PEEK supporting bracket for a spacecraft. Based on the analysis results,the injection molding parameters were put forward,and the supporting bracket was formed finally. The research showed that the inhomogeneous wall thickness and the larger inner stress were the internal factors that lead to the significant volume contraction and warpage,and the wall thickness structure should be adjusted and the pressure retaining process also should be optimized. With the injection temperature 380 ℃,the mold temperature 170 ℃,the injection pressure 97 MPa,the injection rate 55 cm3/s,the injection holding pressure 90 MPa and the pressure holding time 15 s,the supporting bracket products were successfully applied to a spacecraft fuel tank and passed the flight test verification,and the good application results had been obtained.
引文
[1]王波. Moldflow模流分析在注塑过程中的应用[J].塑料科技,2015,43(6):75-78.
[2]李志伟.基于Moldflow的透明罩板成型过程模流分析[J].模具工业,2015,41(10):45-48.
[3]边慧光,王虎子,张深钊,等.基于Moldflow汽车导流板的模流分析[J].橡塑技术与装备,2016,42(22):58-62.
[4]汪传生,蔡宁,胡纪全,等.基于Moldflow汽车椅背板的模流分析[J].模具技术,2018(1):1-5.
[5]何镜奎,陈洪土.基于模流分析技术对注射模填充分析的探讨[J].模具制造,2016,16(12):49-52.
[6]李峰,申屠宝卿.模流分析在含嵌件制品优化设计中的应用[J].塑料工业,2007(9):35-37.
[7]张蓓,陈聪.圆形壳体模流分析及注射模设计[J].模具工业,2017,43(12):39-43.
[2]李志伟.基于Moldflow的透明罩板成型过程模流分析[J].模具工业,2015,41(10):45-48.
[3]边慧光,王虎子,张深钊,等.基于Moldflow汽车导流板的模流分析[J].橡塑技术与装备,2016,42(22):58-62.
[4]汪传生,蔡宁,胡纪全,等.基于Moldflow汽车椅背板的模流分析[J].模具技术,2018(1):1-5.
[5]何镜奎,陈洪土.基于模流分析技术对注射模填充分析的探讨[J].模具制造,2016,16(12):49-52.
[6]李峰,申屠宝卿.模流分析在含嵌件制品优化设计中的应用[J].塑料工业,2007(9):35-37.
[7]张蓓,陈聪.圆形壳体模流分析及注射模设计[J].模具工业,2017,43(12):39-43.